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5 Written questions

5 Matching questions

  1. Benthos
  2. Thermocline
  3. Sublittoral Zone
  4. Aquaculture
  5. Plankton
  1. a A layer in a body of water in which water temperature drops with increased depth faster than it does in other layers.
  2. b The mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine) environments.
  3. c The raising of aquatic plants and animals for human use or consumption.
  4. d The shallow benthic zone that most organisms live in; located on the continental shelves and is populated by organisms such as sea stars, brittle stars, and sea lilies.
  5. e Organisms that live at the bottom of oceans or bodies of fresh water.

5 Multiple choice questions

  1. A floating layer of sea ice that completely covers an area of the ocean surface.
  2. The ratio of the mass of a substance to the volume of the substance; commonly expressed as grams per cubic centimeter for solids and liquids and as grams per liter for gases.
  3. Potato-shaped lumps of minerals that are found on the abyssal floor of the ocean.
  4. The region of an ocean or body of fresh water above the benthic zone.
  5. Has no sunlight because it begins at a depth of 4,000 meters and extends to a depth of 6,000 meters.
    organisms that live there: sponges and worms

5 True/False questions

  1. Sea SaltsDissolved solids that make up about 3.5% of the mass of ocean water. These dissolved solids give the ocean its salty taste.

          

  2. Oceanic ZoneThe region of an ocean or body of fresh water above the benthic zone.

          

  3. Benthic ZoneThe region of an ocean or body of fresh water above the benthic zone.

          

  4. NektonAll organisms that swim actively in open water, independent of currents

          

  5. DesalinationA process of removing salt from ocean water.

          

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